A blizzard is a severe snowstorm with high winds and low visibility.To start a blizzard you need 3 things. You need cold air,lost of moisture and lift warm air has to rise over cold air. you need cold air, below freezing to make snow. Then moisture is needed to form clouds and precipitation. Last warm air is needed to cause clouds and precipitation. Blizzard most occur in central Canada, Russia and the U.S. In case of a blizzard you have to have a weather radio for any warnings. Stay inside. Buy can foods and water, because you might not be able to get out of your house for a few days.